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LOSS OF PRESTRESS DUE TO ANCHORAGE TAKE-UP

THE EFFECT IS CONSIDERED OF THE FRICTION BETWEEN THE STEEL AND ITS SURROUNDING MATERIAL DURING THE DETENSIONING OF THE STEEL AT THE TIME OF ANCHORAGE TAKE-UP. FORMULAS AND EXAMPLES FOR COMPUTING THE REQUIRED STEEL STRESS AT WHICH LEVEL THE ANCHORING OF STEEL BEGINS ARE PRESENTED. /AUTHOR/